/*
 * Copyright 2004-2014 Brian McCallister
 * Copyright 2010-2014 Ning, Inc.
 * Copyright 2014-2020 Groupon, Inc
 * Copyright 2020-2020 Equinix, Inc
 * Copyright 2014-2020 The Billing Project, LLC
 *
 * The Billing Project licenses this file to you under the Apache License, version 2.0
 * (the "License"); you may not use this file except in compliance with the
 * License.  You may obtain a copy of the License at:
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
 * License for the specific language governing permissions and limitations
 * under the License.
 */
package org.skife.jdbi.v2.tweak;

import org.skife.jdbi.v2.StatementContext;

import java.sql.ResultSet;
import java.sql.SQLException;

/**
 * Used with a {@link org.skife.jdbi.v2.Query#map(ResultSetMapper)} call to specify
 * what to do with each row of a result set
 */
public interface ResultSetMapper<T>
{
    /**
     * Map the row the result set is at when passed in. This method should not cause the result
     * set to advance, allow jDBI to do that, please.
     *
     * @param index which row of the result set we are at, starts at 0
     * @param r the result set being iterated
     * @param ctx
     * @return the value to return for this row
     * @throws SQLException if anythign goes wrong go ahead and let this percolate, jDBI will handle it
     */
    T map(int index, ResultSet r, StatementContext ctx) throws SQLException;
}
